Our project experience covers everything from multi-storey apartments and commercial fitouts to public infrastructure and residential developments. With a strong technical foundation and proven on-site delivery, we design and install systems that perform efficiently, meet compliance standards, and last for decades.

Check out a selection of projects below.

Architectural drawing of a modern building with a sloped roof, large windows, and brick accents. Grantham Group Project

Leybourne Crescent A modern residential neighborhood with three multi-story houses, including driveways with parked cars, walking pedestrians, and lush green landscaping. Clear sky and trees are visible in the background. Grantham Group Project

Potiki Apartments Architectural drawing of a multi-story residential building on a sloped terrain with balconies and large windows. Grantham Group Project

Est 1991 • 35+ full-time staff • 3 Hotels in 2024 • 100+ major projects. • 4 Years IMPAC Prequal

Proven Quality Services

Delivering complex plumbing and drainage projects with precision and consistency.

Mountain Oak Apartments Modern apartment complex at sunset with mountains in background, parking lot with cars, and autumn trees in the foreground. Grantham Group Project

Double Tree by Hilton Karaka Black and white architectural rendering of a modern multi-story building with large glass windows, flat roofs, and a carport area in front. Grantham Group Project

Mountain Oak Apartments

Woolworths Greenlane

AWRCF

Leybourne Crescent

Roulston Street

Kapuni Avenue

Est 1991 • 35+ full-time staff • 3 Hotels in 2024 • 100+ major projects. • 4 Years IMPAC Prequal

Proven Quality Services